Introduction

Data Collection

The task is to estimate total body water (TBW) loss using bioimpedance measurements, temperature measurements, salivary samples, and sweat samples. TBW loss was induced by 120 minutes of physical exercise without fluid intake. Physical exercise consisted of running on an indoor treadmill and was partitioned into 8 intervals of 15 minutes. Every 15-minute running interval was followed by an 8-minute resting break in which bioimpedance, temperature, sweat, and saliva were collected / measured. TBW loss was assumed to be equal to the change in body weight, which was measured using a high-precision scale (+- 5 g accuracy).

Files

The subject data and measurements are contained in the dehydration_estimation.csv file. The attributes in the data set are:

subject id (10 subjects in total)

subject age [years]

subject height [cm]

running speed on treadmill [km/h]

running interval (8 running intervals in total, 0 denotes baseline measurements before the first interval, 1 denotes measurements after the first running interval, 2 denotes measurements after the second running interval, ...)

body weight measured using Kern DE 150K2D [kg] (difference in body weight is assumed to be equal to total body water loss)